Text model

Claude Sonnet 4.5 · AWS API pricing

Anthropic's Claude series — long context, dependable tool calling, and the native models behind Claude Code.

Model IDaws/claude-sonnet-4.5

ChatStreamingTool callingVision

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Call summary

Input

$3.00/ 1M tokens

Cache write $3.75

Cache read $0.30

Output

$15.00/ 1M tokens

Context Window

200K

API Endpoints

Claude Sonnet 4.5 · AWS API endpoints

One API key — call this model through any of the 2 endpoints below.

POST/v1/chat/completionsOpenAI-compatible · Works for every model

Chat Completions reference

POST/v1/messagesAnthropic-native · Native for Claude Code

Messages API reference

Call Claude Sonnet 4.5 · AWS from your code

The same API key works across all 2 endpoints below.

Endpoint

/v1/chat/completions

Model ID

aws/claude-sonnet-4.5

Request example

bash

curl -X POST \
  https://api.router.one/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "aws/claude-sonnet-4.5",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'

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Production reliability

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More Claude models on Router One

22 other Claude models on the same gateway and API key — each page lists endpoints, posted price, and context window.

8 channel versions

Claude Haiku 4.5 · AWS$1.00 in / $5.00 out per 1M200K context Claude Opus 4.5 · AWS$5.00 in / $25.00 out per 1M200K context Claude Opus 4.6 · AWS$5.00 in / $25.00 out per 1M1M context Claude Opus 4.7 · AWS$5.00 in / $25.00 out per 1M1M context Claude Opus 4.8 · AWS$5.00 in / $25.00 out per 1M1M context Claude Opus 5 · AWS$5.00 in / $25.00 out per 1M1M context Claude Sonnet 4.6 · AWS$3.00 in / $15.00 out per 1M1M context Claude Sonnet 5 · AWS$2.00 in / $10.00 out per 1M1M context

Claude Sonnet 4.5 · AWS at a glance

Claude Sonnet 4.5 · AWS (model ID aws/claude-sonnet-4.5) is a Claude-series text model on Router One. Claude Sonnet 4.5 · AWS is sold on the AWS sales channel: a separately priced product with an isolated routing pool — requests never fall back to the default channel, its rates and long-context tiers are its own, a plan quota covers it only when the live plan response lists the channel id, and the response model field and Dashboard → Logs carry the channel id. No Router One subscription plan includes Claude Sonnet 4.5 · AWS today; every call bills the wallet at its posted rate. Posted rate: $3.00 in / $15.00 out per 1M tokens. Context window: 200K tokens. Accepts text, image; returns text. Endpoints: POST /v1/chat/completions (OpenAI-compatible), POST /v1/messages (Anthropic-native, the Claude Code path).

Claude Sonnet 4.5 · AWS FAQ

How much does Claude Sonnet 4.5 · AWS cost on Router One?

Claude Sonnet 4.5 · AWS is billed per token on Router One: $3.00 in / $15.00 out per 1M tokens, pay as you go.

Is Claude Sonnet 4.5 · AWS included in Router One subscriptions?

No Router One subscription plan includes Claude Sonnet 4.5 · AWS today; every call bills the wallet at its posted rate.

Which endpoints serve Claude Sonnet 4.5 · AWS?

Claude Sonnet 4.5 · AWS is served on 2 endpoints — POST /v1/chat/completions (OpenAI-compatible), POST /v1/messages (Anthropic-native, the Claude Code path). The same Router One API key works on each.

What is Claude Sonnet 4.5 · AWS's context window?

Claude Sonnet 4.5 · AWS accepts up to 200K tokens of context per request on Router One.

What does the aws/ prefix in aws/claude-sonnet-4.5 mean?

aws/ selects the AWS sales channel on Router One: a separately priced product whose routing stays inside the AWS channel and never falls back to the default channel, with posted rates and tiers of its own, plan quota only when the live plan response lists the channel id, and the channel id echoed in the response and in every request trace. Router One publishes the channel label and the customer price, not the suppliers or regions behind it; the channel model ids guide on the blog states the full rules. No Router One subscription plan includes Claude Sonnet 4.5 · AWS today; every call bills the wallet at its posted rate.

Start using Claude Sonnet 4.5 · AWS

Create an API key and call Claude Sonnet 4.5 · AWS at $3.00 in / $15.00 out per 1M tokens on Router One — pay as you go, with per-request cost and latency visibility.

Get API Key Plans & pay-as-you-go pricing Compare models side by side Quickstart guide Channel model ids guide